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DNA Structure and Replication

DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

helix-turn-helix
zinc finger
TFIID
bZIP

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DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

both (a) and (b)
primase
RNA polymerase
reverse transcriptase

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

All of these
3' → 5' exonuclease
5' → 3' exonuclease
5' → 3' polymerase

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DNA Structure and Replication
Each replication bubbles consists of

2 replication forks
3 replication forks
1 replication forks
4 replication forks

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

Single stranded protein, DNAa
DNAb, DNA polymerase
DNAa, gyrase
DNAb, gyrase

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DNA Structure and Replication
How does ethidium bromide interact with DNA?

It binds to phosphate
It intercalates between bases
It binds to adenine
It does not interact

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